Sheet conveying apparatus, image forming apparatus, and image reading apparatus

Abstract

An aspect of the invention provides a sheet conveying apparatus, an image forming apparatus, and an image reading apparatus, in which generation of skew feeding caused by the shock in pressure contact of a rotation body can be reduced. An interlocking mechanism brings a driven roller 222 biased by a biasing member into pressure contact with a feeding portion 221c of a driving roller 221 in conjunction with rotation of the driving roller 221. The driving roller 221 includes a non-feeding portion 221d in a circumferential surface thereof. The driven roller 222 is caused to abut on a pressure holder 225 before the driven roller 222 moved in a direction in which the interlocking mechanism brings the driven roller 222 into the pressure contact with the driving roller 221 is brought into the pressure contact with the driving roller 221.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a sheet conveying apparatus, an image forming apparatus, and an image reading apparatus, particularly to a configuration for correcting skew feeding and crosswise misalignment of a sheet, such as recording paper and an original, which is conveyed to an image forming portion or an image reading portion.[0003]2. Description of Related Art[0004]Conventionally, the image forming apparatus and image reading apparatus such as a copying machine, a printer, and a facsimile include a sheet conveying apparatus that conveys the sheet such as the recording paper and original to the image forming portion and image reading portion. Sometimes the sheet conveying apparatus includes a skew feeding correction portion that corrects the skew feeding of the sheet and a displacement of the sheet in a direction orthogonal to a sheet conveying direction (hereinafter, referred to as crosswise direction) in order...

AI Technical Summary

Benefits of technology

[0021]Accordingly, before the driven rotation body is brought into the pressure contact with the driving rotation body, the holding portion or the driven rotation body is caused to abut on the abutment portion to reduce the shock caused in the pressure contact of the driven rotation body with the driving rotation body, so that the generation of the skew feeding caused by the shock in the pressure contact of the rotation body can be reduced.

Problems solved by technology

However, the mechanical link mechanism becomes complicated and a huge amount of time is required for the adjustment, which results in large cost increase.

Therefore, it is necessary to frequently exchange the rollers, and a work load on a service person is increased because the adjusting work is generated in each roller exchange in the field.

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